Originally Posted by mrmarlowe

So I've just started to look at ways to verify the age of anyone in the UK who wants to join one of my sites. Some look complicated. The idea of letting someone join then making them verify their age is definitely not a good idea and it also seems dishonest.

This looks like a really good and simple solution:

https://www.ageverification.org/get_embed_code

You just add this code:

<script src="https://www.ageverification.org/inject/script.min.js"></script>

at the bottom of any page on your site you want to restrict. It just needs to be still in the body tag.